Recently I've had time to work on some C++11 library additions for libstdc++ which had been brewing in my Git tree for months. std::forward_list meets the C++11 allocator container requirements now. std::scoped_allocator_adaptor is 99% complete now. I'm trying to provide std::this_thread::yield(), std::this_thread::sleep_*() and a high-resolution std::system_clock even when GCC isn't built with --enable-libstdcxx-time (with huge thanks to Roland McGrath for help from glibc.) I need to write tests for my implementations of std::wstring_convert and std::wbuffer_convert so I can commit them.